Electric switch.



PATBNTED MAY 9, 1905.

M. GUETT.

ELECTRIC SWITCH.

APPLIGATION FILED NOV. 18, 1903.

2 SHEETS-SHEET l.

No. 7895366 PATENTED MAY 9, 1906. M. GUETT.

ELECTRIC SWITCH. APPLICATION FILED N'ov. 1e, 1903 2 SHEETSSHEET 2.

NPF TATE Patented May 9, 1905.

MONROE GUETT, OF HARTFORD. CONNECTICUT, ASSiIG-NOR TO HART &

HEGEMAN MANUFACTURING COMPANY, OF HARTFORD, CONNECTI- CUT, A CORPORATION OF CONNE TICUT.

ELECTRIC SWlTCl'l.

SPECIFICATION forming part of Letters Patent No, 789,366, dated May 9, 1905.

Application filed November 18, 1903. Serial No. 181,616.

To ({JZ Ir/7mm, it may concern-r Be it known that I, Momaon Gulrrr, a citizen of the United States of America, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Electric Switches, of which the following is a specili- :ation.

This invention has for its object the im- IO provement of electric switches whereby they may be operated by lever mechanism in place of the customary turn-buttons or push-buttons.

The invention is particularly adapted for use in pendent switches, and it is such an em bodiment of the invention that is illustrated in the drawings.

Figure 1 is a front view of the device removed from the casing. Fig. 2 is a side view. Fig. 3 is a plan view of the operating-levers in their extended or normal position, show ing in dotted line the operating-arm. Fig. at is a view of the operating-levers, showing their position at the time when the arm is 2 5 about to be released. Fig. 5 is a view of the operating parts after the switch has been thrown and before the levers are released.

Fig.6 is a perspective view from underneath the arm 5. Fig. 7 is a general outside view of the device. Fig. 8 illustrates the springdetent plate in plan and edge view. Fig. 9 is a detail view showing the oscillating member and its connection with the movable contact.

Referring to the drawings, ((1 is a spindle mounted on a base of insulating material. On this base are also secured the contacts a a.

Z) is a switch-plate rotatably mounted on the spindle (I! and having a blade cooperating with the contacts a" a. The switch-plate is engaged on its under side by spring-detents a. which permit of its rotation in one direction only. Secured to the outer side of the 4 5 switch-plate are stops 0.

(Z is an oscillating member mounted on the spindle (t. On its under side are spring-detents 0', which engage the stops on the switchplate. so that it will move with the oscillating member (I.

The spring-detent s underneath the switchplate permits its forward movement with the oscillating member '(7. During the return movement of the oscillating member (I while the detent r is moving over the outer face of the switch-plate the detent x engages the under side of the s\vitcl'1-1.)late and prevents its backward movement. It will thus be seen that when the oscillating member moves forward it carries with it the switch-plate Z) and when the oscillating member returns to its original position the switch plate is held against backward movement by the springdetent a.

On. the posts g It are pivoted the levers f, which control the mechanism which aetuates the oscillating member (I. These levers are connected by the gear-teeth a'f, so that their movements with respect to one another will be properly timed in order that the cooperating parts on the two levers shall work together properly. The lever c is projected beyond the post 7 and has the upstanding ledge n. An arm 1'. is pivoted to the top of the post it. Both the arm 1 and the lever f are provided with upstanding projections v" 7 which normally are rad y in line as 5 seen in Figs. 1 and 3. About the post /t there is coiled a spring in, whose ends lie on opposite sides of these projections f", as clearly seen in Figs. 1 and 3.

The arm 1' has the downwardly-projecting finger 7), which co perates with the upstanding ledge n, as will be hereinafter described. The end of the arm '1: is connected with the oscillating member through the linltj. This arm is also provided with a pawl projection 7", which is adapted to cooperate-with the stop 0 on the switch-plate?) to determine the amount of movement at each throw of the switchplate.

A spring q, surrounding the post g and hav ing its ends confined between a pin on the lever e and a stationary post, is provided to return the parts to their normal position.

The switch above described operates as follows: Fig. 1 shows the normal position of the parts, the levers cf being extended and the springs in relaxed. As the levers 0,7" are broughttogether,as by pressure with the hand, as shown in Fig. I, the inner surface of the upstanding ledge 72 rides around the linger p on the arm 1, thus holding the arm '2' against movement. This causes the spring m to be compressed, as shown in Fig. 4. Further movement of the levers e f causes the ledge a to ride by the linger p, and so release the arm 2', at which time the spring 112, tending to return to its relaxed condition, throws the arm a over to the position shown in Fig. 5, bringing it into its normal relation with the arm f. The oscillating member (Z is connected with the arm 1' through the link 7' and is thrown forward by this movement of the arm 2', carrying with it the switch-plate to the position shown in Fig. 5. The pawl projection it on the arm 2' is carried into the path of movement of the stops 0 on the switch-plate and is engaged thereby to determine the amount of movement of the switch-plate at each throw. As is clearly shown in Fig. 1, the act of bringing the levers e 7" together compresses the spring 9, so that when the levers are relieved from pressure these springs return the parts to their normal position, as shown in Fig. 1.

This type ofswitch and the manner in which it is operated is particularly adaptable for pendent switches, which are in very general use, and it is such an embodiment of the invention that is shown in the drawings, Fig. 7 showing the appearance of the switch when in use, the parts being inclosed in a suitable casing i. As is evident, the details of construction are susceptible of modification and alteration without departing from the scope of the invention.

I claim as my invention- 1. In an electric switch the combination with the stationary and movable parts, of actuating mechanism for the latter, said mechanism including a pair of levers connected together to move in unison, and devices connecting one of said levers with the movable switch member and having a controlling engagement with the other lever.

2. In an electric snap-switch in combination the insulating-base; the stationary contacts and spindle mounted thereon; the rotatable switch-plate mounted on said spindle free to rotate in one direction only; stops on said switch-plate; an oscillating member mounted on said spindle and adapted to engage said switch-plate during the forward movement of the oscillating member; a pivoted lever;

an arm-spring connected therewith and carrying a pawl which coacts with said stops; connections between said arm and the oscillating member; and a second lever mounted in operative relation with the first-mentioned lever and cooperating therewith to actuate said switch-plate, substantially as described.

3. In an electric snap-switch the combination with the stationary and movable parts thereof, of mechanism for actuating said movable parts; said mechanism comprising a pair of levers mounted to move in unison; an arm connected to one lever by a spring and to an oscillating member by suitable means; and means carried by the other lever for controlling said arm during the initial movement of the levers; said oscillating member; and forward driving connections between it and the movable switch part; and means for returning the parts to their normal position.

4L. In an electric snap-switch the combination with the stationary and movable parts thereof, of mechanism for actuating said movable parts; said mechanism comprising a pair of levers mounted to move in unison; an arm connected to one lever by a spring and to an oscillating member by suitable means; and means carried by the other lever for controlling said arm during the initial movement of the levers; said oscillating member, and forward driving connections between it and the movable switch part; stops to limit the movement of the movable part; and means for returning the parts to their normal position.

5. In an electric snap-switch the combination with the stationary and movable parts thereof, of mechanism for actuating said movable parts; said mechanism comprising a pair of levers mounted to move in unison; an arm connected to one lever by a spring and to an oscillating member by suitable means, and having a finger cooperating with a ledge on the other lever to control the movement of the arm; said oscillating member; forward driving connections between the oscillating member and the switch-plate, and the spring to return the parts to their normal position.

6. In an electric snap-switch the combination with the stationary and movable parts thereof, of mechanism for actuating said movable parts; said mechanism comprising a pair of levers mounted to move in unison; an arm connected to one lever by a spring and to an oscillating member by a link, and having a linger cooperating with a ledge on the other lever to control the movement of the arm; said oscillating member; forward driving connections between the oscillating member and the switch-plate; stops to limit the movement of the movable part; and the spring to return the parts to their normal position.

7. The herein-described mechanism for operating the movable parts of an electric switch which comprises a pair of levers pivotally mounted to move in unison; an arm connected to one of the levers by a spring and to an oscillating member by a linlr, said oscillating member and a driving connection between it and the movable switch part; and a ledge on the other lever cooperating with said arm to release it when said. spring is su'iiiciently tense.

8. The herein-described mechanism for operating the movable parts of an electric switch which comprises a pair of levers pivotally mounted to move in unison; an arm connected to one of the levers by a spring and to an oscillating member by a link; said oscillating member and a driving connection between it and the movable switch part, a ledge on the other lever cooperating with said arm to release it when said spring is suiiieiently tense; and a stop to limit the movement of the movable part.

9. in an electric snap-switch the combination with the insulating-base, stationary contacts and spindlemounted thereon, of a switchplate rotatably mounted on said spindle; swing-detents engaging said plate to prevent its backward movement; stops on the said plate; an oscillating member having springdetents which engage said switch-plate to move it forward; a pair of levers connected together to move in unison; an arm connected With one of said levers by a spring and to the oscillating member by a link; a

ledge on the other lever cooperating with a linger on said arm; and a sprlng to return the parts to their normal position, all substantially as described and for the purposes set forth.

10. In an electric snap-switch in combination an insulating-base and a spindle and contacts mounted thereon; a switcl'liilate rotatably mounted on said spindle and free to move in one direction only; stops thereon; an oscillating member engaging said switchplate to move it; levers pivotally mounted and connected together to move in unison; a pivoted arm connected to one lever by a spring and to the oscillating member by a link; a finger on said arm coacting with a ledge on the other lever whereby said arm is held against movement during the initial movement of said levers and then released; a projection carried by said arm and cooperating with the stops on the switch-plate; and means for returning the parts to their normal position, substantially as described and for the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

MONROE (-iUETTl.

Witnesses:

H. E. HART, l). A. KUmnNnAnL. 

